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Improve error messages when multiple drivers are detected. 

Distinguish between nets declared as uwires and variables.
This commit is contained in:
Martin Whitaker 2024-02-03 14:06:40 +00:00
parent 65f552aba3
commit cd2d4e9287
4 changed files with 9 additions and 5 deletions
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8
elab_net.cc
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@ -876,8 +876,12 @@ NetNet* PEIdent::elaborate_lnet_common_(Design*des, NetScope*scope,
long wcount = widx_flag ? 1 : sig->pin_count(); long wcount = widx_flag ? 1 : sig->pin_count();
for (long idx = 0; idx < wcount; idx += 1) { for (long idx = 0; idx < wcount; idx += 1) {
if (sig->test_and_set_part_driver(midx, lidx, widx + idx)) { if (sig->test_and_set_part_driver(midx, lidx, widx + idx)) {
cerr << get_fileline() << ": error: Unresolved net/uwire " cerr << get_fileline() << ": error: ";
<< sig->name() << " cannot have multiple drivers." << endl; if (sig->coerced_to_uwire())
cerr << "Variable '";
else
cerr << "Unresolved wire '";
cerr << sig->name() << "' cannot have multiple drivers." << endl;
if (debug_elaborate) { if (debug_elaborate) {
cerr << get_fileline() << ": : Overlap in " cerr << get_fileline() << ": : Overlap in "
<< "[" << midx << ":" << lidx << "] (canonical)" << "[" << midx << ":" << lidx << "] (canonical)"

2
ivtest/gold/br_gh1087a2-iverilog-stderr.gold
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@ -1,2 +1,2 @@
ivltests/br_gh1087a.v:6: error: Unresolved net/uwire r cannot have multiple drivers. ivltests/br_gh1087a.v:6: error: Unresolved wire 'r' cannot have multiple drivers.
1 error(s) during elaboration. 1 error(s) during elaboration.

2
ivtest/gold/br_gh1087b-iverilog-stderr.gold
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@ -1,2 +1,2 @@
ivltests/br_gh1087b.v:6: error: Unresolved net/uwire b cannot have multiple drivers. ivltests/br_gh1087b.v:6: error: Unresolved wire 'b' cannot have multiple drivers.
1 error(s) during elaboration. 1 error(s) during elaboration.

2
ivtest/gold/uwire_fail.gold
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@ -1,2 +1,2 @@
./ivltests/uwire_fail.v:5: error: Unresolved net/uwire two cannot have multiple drivers. ./ivltests/uwire_fail.v:5: error: Unresolved wire 'two' cannot have multiple drivers.
1 error(s) during elaboration. 1 error(s) during elaboration.